I think that the stuff on the plug was just carbon. i put different plugs in it last night then ran it around the field ran great for about 20 mins then started pulling down and then eventually lost most of its power and then when idling finally died like the spark gets weak when it gets hot. but th...

I was thinking that might be what it was. but if it is im not going to rebuild the engine. I have another trailfire 440 that is not electric start. but has a cover over where the starter is on my sled. will it have a ring gear for the starter and how hard would it be to convert over?

Ok i think my motor is shot. I pulled the plugs out of it and the left one if you sittin on the seat was good but the right one was all chewed up looked like it had something sittin there chippin at it. Im not sure what caused it but it had sharp spot on it where it had hit. but i put new plugs in i...

jdrob- i aint wantin to put much money in this sled just because im from ohio and if we even get enough snow to run sleds it dont last long or its a dry snow thats not any fun to ride in. JDT- ill have to try that. iv got 2 other JD sled both with busted tracks that i can take an exhaust off of. The...

I personally dont know much about it. i bought it for 350 bucks at a sale last spring and thats all i know about it haha.

EL DIABLO- When you are saying you pump your taking about the little box with the gas comin from the tank and then goin to the carb and has the little line goin to the crank case right? and Whats the CDI box and where is it located? kreechur- i have a brand new battery in it so i dont think its that...

Hi my 440 Trailfire LX Electric Start is giving me problems. Im not sure what engine it has but when you get over about 2/3 throttle it runs great for just a few seconds and then it starts to die out. and if you try to save it, it acts like you just flipped the kill switch. then you stop let it sit ...